Trying to maximize fuel efficiency without sacrificing power, _________
Which choice completes the text so that it conforms to the conventions of Standard English?
the engineers designed a new hybrid engine for the vehicle.
a new hybrid engine was designed for the vehicle by the engineers.
the vehicle was fitted with a new hybrid engine designed by the engineers.
the design of the new hybrid engine was the engineers' primary goal.
Correct Answer: A
Choice A is the best answer. The introductory phrase "Trying to maximize fuel efficiency" describes people with a specific goal. "The engineers" is the correct subject.
Choice B is incorrect because "a new hybrid engine" cannot try to maximize efficiency; it is the result of the effort. Choice C is incorrect because "the vehicle" cannot try to maximize efficiency in this context. Choice D is incorrect because "the design" cannot try to maximize efficiency.